Defensin-like polypeptide LUREs are pollen tube attractants secreted from synergid cells

Satohiro Okuda, Hiroki Tsutsui, Keiko Shiina, Stefanie Sprunck, Hidenori Takeuchi, Ryoko Yui, Ryushiro D. Kasahara, Yuki Hamamura, Akane Mizukami, Daichi Susaki, Nao Kawano, Takashi Sakakibara, Shoko Namiki, Kie Itoh, Kurataka Otsuka, Motomichi Matsuzaki, Hisayoshi Nozaki, Tsuneyoshi Kuroiwa, Akihiko Nakano, Masahiro M. Kanaoka, Thomas Dresselhaus, Narie Sasaki and Tetsuya Higashiyama ()
Additional contact information
Satohiro Okuda: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Hiroki Tsutsui: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Keiko Shiina: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Stefanie Sprunck: Cell Biology/Plant Physiology, University of Regensburg, Universitätsstraße 31
Hidenori Takeuchi: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Ryoko Yui: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Ryushiro D. Kasahara: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Yuki Hamamura: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Akane Mizukami: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Daichi Susaki: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Nao Kawano: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Takashi Sakakibara: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Shoko Namiki: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Kie Itoh: Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562, Japan
Kurataka Otsuka: Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Motomichi Matsuzaki: Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Hisayoshi Nozaki: Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Tsuneyoshi Kuroiwa: Research Information Center of Extremophile, Graduate School of Science, Rikkyo (Saint Paul’s) University, Nishi-Ikebukuro, Tokyo 171-8501, Japan
Akihiko Nakano: Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Masahiro M. Kanaoka: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Thomas Dresselhaus: Cell Biology/Plant Physiology, University of Regensburg, Universitätsstraße 31
Narie Sasaki: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
Tetsuya Higashiyama: Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan

Nature, 2009, vol. 458, issue 7236, 357-361

Abstract: Floral attraction: elusive pollen-tube attractant identified Precise pollen tube guidance is critical for the successful fertilization of flowering plants. The concept of a pollen tube attractant was proposed in the late nineteenth century when pollen tubes were found to grow towards excised pistil tissues on medium. In 2001 the synergid cells, situated next to the egg, were shown to secrete a soluble factor that guides the growing pollen tube towards the embryo sac. Now at long last, these pollen tube attractants have been identified. Synergid cells were isolated from Torenia fournieri ('wishbone flower') plants, which are unique in having a protruding embryo sac. The secreted guidance factors were identified as cysteine-rich polypeptides belonging to the sub group of defensin-like proteins, and named LUREs.

Date: 2009
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DOI: 10.1038/nature07882

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